public void closePresentationTest()
        {
            PowerPointControl target = new PowerPointControl(); // TODO: Initialize to an appropriate value

            target.PreparePresentation(correctFileName);
            target.StartPresentation();

            try
            {
                target.ClosePresentation();
                Assert.IsTrue(true, "Presentation was closed with no exception");
            }
            catch(Exception e)
            {
                Assert.Fail("Exception : " + e.Message); 
            }

        }
        public void closeNotStartedPresentationTest()
        {
            PowerPointControl target = new PowerPointControl(); // TODO: Initialize to an appropriate value

            try
            {
                target.ClosePresentation();
                Assert.Fail("Non existent presentation was closed with no exception");
            }
            catch (Exception e)
            {
                Assert.IsTrue(true, "Exception was correctly throw for a bad non existent presentation");
            }
        }